Hi!
I have tried to revive RTC circuit on my 4000 desktop, but to this day, wasn't able to win the battle.
Here is this case; when I turn on computer, system does not see the clock (just checking by running SysInfo program). But when I run "SetClock Save" command, this apparently turns on RTC. Is it possibble to narrow down as to what may cause this?
Ofcourse battery has eaten some of motherboard traces, which I tried to repair. Using multimeter continuity check and resistance checks, following this fine guide ---
http://amiga.serveftp.net/RTCrepair.htmlAlso used Amiga PCB Explorer ---
http://www.amigapcb.org/All measured within this guide spec.
Replaced RTC chip with new one (socketed this time), also installed new 74HCT174 (U177) chip.
Also running CR2032 battery with diode in place of R179 resistor. The voltage on pin 16 U178 about 3,0V when power is off. Still RTC isn't holding time when computer is turned off or reset is made.
Here is short video of my problem. Apologies for shakin camera and all.
https://www.youtube.com/watch?v=0XKsO42jcmk
